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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10640
    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/10640


    題名: Measurement of Time Dependent CP Violating Asymmetries in B0 ---> PHI K0(S), K+ K- K0(S), and Eta-Prime K0(S) Decays
    Authors: 郭榮升
    K. Abe;Rurng-Sheng Kuo
    貢獻者: 物理系
    Date: 2003-12-31
    Issue Date: 2010-11-11 09:06:32 (UTC+8)
    Abstract: We present an improved measurement of CP-violation parameters in B0→ϕK0S, K+K−K0S, and η′K0S decays based on a 140   fb−1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e− collider. One neutral B meson is fully reconstructed in one of the specified decay channels, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters for each of the three modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays. We find that the observed CP asymmetry in the B→ϕK0S decay differs from the standard model (SM) expectation by 3.5 standard deviations, while the other cases are consistent with the SM.
    關聯: Physical Review Letters / vol.91 iss.26, 261602-1-261602-6
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 郭榮升

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